Injector or ejector



, v j MM Y Patented May 25,1920;

vATToRmiYS E. 0. CARTWRIGHT. INJEcToR 0R EJECToR.

APPLICATION FILED MAR. 7. 1919.

1,341,010, v Patented May 25, 1920. j

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and tate of UNITED STATES PATENT OFFICE..

ERNEST 0. CARTWRIGHT, 0F SPRINGFIELD, OHIO, ASIGNOR TO CHARLES F. GARDNE, 0F SPRINGFIELD, OHIO.

INJEcToR on: YnJEc'roR.

Application filed March 7, 1919. -Serial No. 281,272.

To all whom t may concern."

Be it known that I, ERNEST O. ,CART- WRIGHT, a citizen of the United States, residin at Sprin field, in the county ofl Clark hio, havel invented certain new and useful Improvements in Injectors or Ejectors, of which the following is a specification.

My present invention has for its object to provide an improved device for ejecting liquids and solids from sumps, wells or other places and injecting the same into a vseparate tank. All devices of this nature with which I am familiar create a partial vacuum in the suction chamber or passage by applyingthe motive liquid or gas under pressure through an opening or nozzle either in the center or at one side of the vacuum chamber; by reason of this construction the entry of the suction passage into the vacuum chamber, in the case of a central jet, is restricted to a location at one side of the chamber, with a consequent deflectionr ory diusion of the suction column before joins the discharge column; or incase the pressure jet is made to enter the chamber at one side there is also a deflection ofthe suction column to the side of the chamber opposite the entrance of the jet. These defiections and diffusions are not apparent when liquid alone is being drawn up through the suction, and only slightly noticeable when liquidy containing solids of comparatively slight bulk is being elevated, but when the suction is required to handle masses containing solidsfof relatively large dimensions, in such a-case with either of the jets last mentioned, the movement of the suctioncolumn is arrested at the junction with the 'lischarging column to the eX- tent of breaking down the suction. My intention/hais for one of its objects to provide a device which is constructed in suchmanner thatL the material inthe suction duct is immediately enveloped in the discharge column as it rushes up to fill the partial vacuum created by the passage of the motive fiuid into the discharge column whereby there is no deflectionor diffusion of the suction column because of the straight assage into the dischargechamber, and t ere 'is also no arrest of the mass in the suction Specication of Letters Patent.

- Patented May 25, 1920.

vention is the provision for the renewal of the parts subjected to abrasion.

n its morespecilic nature, the invention includes those novel tion, combination and arrangement of parts, all of which will be first fullyv described, then be specifically pointed out in the appended Qlaims and illustrated in the accompanyingfdrawings, in which:

f Figure l is a detail side elevation of a portion of a portable pumping apparatus for which my invention has been especially designed. f

Fig. 2 is a vertical sectionVV of the same taken ythrough the device which constitutes my present invention.

Fig. 3 is an enlarged vertical section of a modification of the invention.

Fig. 4 is a horizontal section on the line l-4 of Fig. 3,*looking in the direction of the arrow.

Fig. is a vertical section of the perforated disk shown in Fig. 8.

Fig. 6 is a topplan view of the disk shown in Fig. 4.

Fig. 7 is a tcp plan view of a modified form of disk.

Fig. 8 is a cross section of the disk shown in Fig. 7. p

Fig. 9 is a plan View.

Fig. 10 .is a cross section of the same show.- ing substantially the type of disk disclosed in Fig. 2.

In the drawings, in which like letters and. numerals of reference indicate like parts in all of the figures, 1 represents the ejector housing which :is provided with 1an eXtension 2 having a flange 22 adapted to be bolted, or otherwise secured to the source 'of motive fluid and the extension 2 incloses a pressure chamber which communicates with the pressure chamber 5 in the body 1 through a passage 6 that is controlled by a valve 15 operated by a hand wheel 16 or in any other suitable manner. 7 designates a boss which is bored to receive the bushfeatures of construc- The duct 10 is ianged at 11 to fit vthe flange 4 of the bo'dy 1 to which it is secured in the usual manner, andA it is recessed at 12 to receive the4 disk 13. When the disk 13 is of the construction shown in Figs. 3 tol 8, inclusive, it is not necessary to have the vdisk 13 threaded into the recess 12 since its engagement with the bushing 8 and the recess 12 will hold the disk in place as well as hold the bushing 8 in the boss 7 the bushing in this construction need' not `be threaded intothe boss. Whenthe disk 13 is constructed as shown in Figs. 2, 9 and 10, however, it is preferable either to force `the disk intothe recess 12 with retaining friction, or to thread it at 13d and tap it into the recess. In that casealso, the bushing 8 may be tapped into the boss 7, if foundv desirable.

The ring 13 has suitable passages 13aL either formed as a series of holes leaving a central annular seat portion.13b or a series of cutaway portions leaving projections 13' (see Figs. 7 and 8) to engage the bushing 8, or it may be formed in the shape of a ring (see Figs. 1, 9 and 10) having a passage 13e spaced from the bushing 8 to form a solid or unbroken hollow column of motive iuid as such fluid is forced from the chamber 5. v A

14 is a tapped opening from the presy sure chamber .3 to which a suitable distributing union, through which the fluid under pressure may be delivered tohose pipes, may be attached, see for example my copending application Serial No. 280,976 filed on Mar.

This invention isadapted for use enerally in many environments, although have designed it especially for use in connection with a portable pumping apparatus forming the subject matter of my application aforesaid, and when so used the duct 10 con-` nects with the tank duct 21 to deliver the material (solids and liquid) into the solids compartment' 19 of the tank 25 from which the fluid content passes through the screen partition 20 into the liquid compartment 18 from whence it isl drawn through the duct l 23 and connection 24 into the centrifugal pump 17 from which it is delivered into the pressure chamber 3 to act as .motive iuid in drawing up additional material through the suction duct 9.

It Iwill 'be observed that with the present construction `the pressure fluid, where' it passes into the entrance of the duct 10, is

vin the form of a hollow cone, the -apex of which isjdirected upwardly, thus causing the formation ofa partial vacuum at the upper end ofthe bushing 8, causing suction in the bushin passage and duct 9, thereby v bringing up t e material which it is desired cto elevate and .inclosing it in the surrounding envelop formed by the motive fluid colpartment of the tank.

duct 10 and duct 21 into the proper comv When the bushing 8 and disk 13 become worn they can be readily replaced by the uncoupling of the parts 11 and 4, thus providing for the convenient renewal of those parts subject to abrasion.

From the foregoing ydescription taken in connection with the accompanying drawings it is thought the complete construction, operation and'advantages of my invention will be readily clear to those skilled in the art and while I have especially designed the invention for use in connection with the portable pumping apparatus referred to yet I desire-it understood that I do not limit the use of my invention thereto as the same ma)7 be employed wherever found suitable.

What I claim ist-- 1. In a'devicef the character described, a body having a relatively large pressure chamber, a suction duct passing through said chamber, a duct into which said suction duct discharges, means for delivering liquid from said pressure chamber into said discharge duct around the outlet of said suce tion duct in the form of a surrounding envelop whereby aKuid envelop will be interposed between the sucked up material and the walls of the discharge duct, substantially as shown and described.

2. In a device of the class described, a body having a receiving chamber anda pressure chamber with which said receiving chamber communicates through a valved passage, a discharge duct, said body having a seat, a bushing held in said seat and pro- 3. In a device of the class described, a

body having a receiving chamber and a pressure chamber with which said recelving lchamber communicates through a valved passage, a discharge duct,said body 4having a seat, a bushing held in said seat and projected throu h -said pressure chamber and `arranged to deliver` into said discharge duct,

a duct connected with the receiving end of said bushing, said discharge duct beingiremovably secured to said body-and having a recess, a ringhaving a water pass seated in said recess and surrounding the exit end of said bushing, and said `ring having provisions for engaging said bushing whereby the ring and bushing will be held in place.

4. In a device of the character described,` a body having a receiving chamber and av pressure ch'amber anda valved passage between said chambers, said body having eny livering from said chambered portion, and outlet opening and also havingv a seat proe ring member locatedl in said chambered 10 vided with a bore, a bushing held in seid portion of said cap member and coperatseat bore and projecting beyond the outlet ing With the discharge end of said bushing of said body, a, cap member fitted on said to direct the pressure Huid in the form of body over the outlet thereof and having a an inverted cone envelop to Said discharge chambered portion into which said bushing duct.

projects and having a discharge duct de- ERNEST O. CARTWRIGHT. 

